Rechargeable nickel electrode containing electrochemical cell and method

Abstract

A sealed rechargeable nickel electrode containing electrochemical cell has a pasted negative electrode having paste layers adhered to a nonforaminous conductive substrate, which retards growth (swelling) of the nickel electrode on cycling.

What is claimed is: 
     
       1. A method for preparing a negative electrode plate for use in a rechargeable nickel electrode-containing electrochemical cell comprising the steps of: advancing an electrically conductive strip substrate at least a portion of which is nonforaminous into and through a coating means;   preferentially applying a paste mixture of electrochemically active material and a vehicle onto the advancing strip such that both opposed major faces of the strip bear paste along a first transverse portion of the strip, and only one of such major faces bears paste along a second transverse portion of the strip leaving a bare substrate portion;   transversely severing the thus pasted strip into a plurality of component strips suitable as electrodes, the bare substrate portion of each component strip adapted to make electrical contact to a terminal of the electrochemical cell; and   removing vehicle from the component strip.   
     
     
       2. The method of claim 1 wherein said bare substrate portion is nonforaminous. 
     
     
       3. The method of claim 1 wherein the strip substrate is an imperforate metallic sheet.